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2008 | 113 | 5 | 1501-1506
Article title

Effect of the Positron Distribution on the Electron-Positron Momentum Density Calculated for SiC

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EN
Abstracts
EN
To interpret positron annihilation data in solids in terms of the electron momentum density, both the electron-positron interaction and positron distribution have to be considered explicitly. In the present work the influence of the shape of the positron wave function on the calculated electron-positron momentum density in elemental SiC is discussed. It is shown that the form of the positron distribution in the Wigner-Seitz cell has a considerable effect on the resulting annihilation characteristics. Calculations were performed for SiC of 3C diamond structure within the linear muffin-tin orbital-atomic spheres approximation method.
Keywords
EN
Year
Volume
113
Issue
5
Pages
1501-1506
Physical description
Dates
published
2008-05
received
2007-09-03
References
  • 1. For review and references see e.g. http://www.ioffe.rssi.ru/SVA/NSM/, Semicond/SiC/bandstr.html
  • 2. For review see e.g. M.J. Puska, R.M. Nieminen, Rev. Mod. Phys. 66, 841 (1994);R.M. Nieminen, in: Positron Spectroscopy of Solids, Eds. A. Dupasquier, A.P. Mills, IOS Press, Amsterdam 1996, p. 443;S. Berko, in: Positron Solid State Physics, Eds. W. Brandt, A. Dupasquier, North-Holland, Amsterdam 1983, p. 64: R.M. Nieminen, ibid., p. 105
  • 3. A. Kawasuro, M. Yoshikawa, H. Itoh, T. Chiba, T. Higuchi, T. Besuyaku, F. Redmann, R. Krause-Rehberg, Phys. Rev. B 72, 045204 (2005);A. Kawasuro, T. Chiba, T. Higuchi, Phys. Rev. B 71, 193204 (2005)
  • 4. S. Daniuk, M. Sob, A. Rubaszek, Phys. Rev. B 43, 2580 (1991)
  • 5. A. Rubaszek, Z. Szotek, W.M. Temmerman, Phys. Rev. B 58, 11285 (1998);ibid., 61, 10100 (2000)
  • 6. R.M. Nieminen, M.J. Puska, Phys. Rev. Lett. 50, 281 (1983)
  • 7. B. Barbiellini, M.J. Puska, T. Konhonen, A. Hajru, R.M. Nieminen, Phys. Rev. 53, 1620 (1996)
  • 8. O.K. Andersen, Phys. Rev. B 12, 3600 (1975);W.R.L. Lambrecht, O.K. Andersen, ibid., 34, 2439 (1986)
  • 9. T. Jarlborg, A.K. Singh, Phys. Rev. B 36, 4660 (1987)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n530kz
Identifiers
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